Reason: reverse transcriptase in
retrovirus is an RNA dependent DNA polymerase enzyme when viral RNA serves as a
template for the synthesis of DNA inside the host. This DNA strand serves as a
template for the synthesis of ds DNA (DNA dependent DNA polymerase
activity)

8. D

Reason: Endocytic vesicles are
usually coated by Clathrin

9. E

10. B

Reason: 5’cap protects mRNA against
ribonuclease degradation, functions in the initiation of protein synthesis and
transport of RNA

11. D

Reason: The hydrophobic interaction
is the most important interaction responsible for proper folding of a protein
that makes the protein functional

It is a set of symptoms and infections resulting from the damage to the human immune system by the virus, that depletes the number of T-lymphocytes(CD4 T cells or helper T-cells).

The greatest hurdle in controlling HIV attack and T4 cells damage is that HIV changes its genetic constitution so quickly that its identification becomes almost impossible. This phenomenon is known as 'antigenic drift'.